# ENV#[] raises an exception on secure mode
class CGI
	ENV = ::ENV.to_hash
end

# for Ruby 1.9.3
if ::Object.method_defined?(:untrust)
	class Object
		def taint
			super
			untrust
		end
	end
end

# for Ruby 1.9.X

# preload transcodes outside $SAFE=4 environment, that is a workaround
# for the possible SecurityError. see the following uri for the detail.
# http://redmine.ruby-lang.org/issues/5279
%w(utf-16be euc-jp iso-2022-jp Shift_JIS).each do |enc|
	"\uFEFF".encode(enc) rescue nil
end

# Auto convert ASCII_8BIT pstore data (created by Ruby-1.8) to UTF-8.
require 'pstore'
class PStoreRuby18Exception < Exception; end

class PStore
	alias compatible_transaction_original transaction unless defined?(compatible_transaction_original)
	def transaction(*args, &block)
		begin
			compatible_transaction_original(*args, &block)
		rescue PStoreRuby18Exception
			# first loaded the pstore file (it's created by Ruby-1.8)
			# force convert ASCII_8BIT pstore data to UTF_8
			file = open_and_lock_file(@filename, false)
			table = Marshal::load(file, proc {|obj|
				if obj.respond_to?('force_encoding') && obj.encoding == Encoding::ASCII_8BIT
					obj.force_encoding('UTF-8')
				end
				obj
			})
			table[:__ruby_version] = RUBY_VERSION
			if on_windows?
				save_data_with_fast_strategy(Marshal::dump(table), file)
			else
				save_data_with_atomic_file_rename_strategy(Marshal::dump(table), file)
			end
			retry
		end
	end

	private

	def load(content)
		table = Marshal::load(content)
		raise PStoreRuby18Exception.new if !table[:__ruby_version] || table[:__ruby_version] < '1.9'
		# hide __ruby_version to caller
		table.delete(:__ruby_version)
		table
	end

	def dump(table)
		table[:__ruby_version] = RUBY_VERSION
		Marshal::dump(table)
	end
end

# Local Variables:
# mode: ruby
# indent-tabs-mode: t
# tab-width: 3
# ruby-indent-level: 3
# End:
